Best for empire size in Stellaris 4.5.2
The biggest empire size bonuses in Stellaris 4.5.2, from every civic, origin, ethic, species trait, ascension perk, tradition and technology in the files: Nanotech: finisher (tradition, -50%), Private Prospectors (civic, -40%), Lost Building Methods (tier 2 engineering tech, -30%). Empire size % from every source, added — lower is better (less sprawl penalty).
Every empire size bonus, ranked
- 1
Nanotech: finisherTradition · Nanotech · -50% Empire Size from Colonies-50% - 2
Private ProspectorsCivic · Megacorporations · -15% Empire Size from Systems, -25% Empire Size from Colonies-40% - 3
Lost Building MethodsTier 2 engineering tech · -30% Empire Size from Districts-30% - 4
Fanatic PacifistEthic · 2 pt · -20% Empire Size from Pops-20% - 5
Beacon of LibertyCivic · Regular empires · -10% Empire Size from Pops-10% - 5
OTA UpdatesCivic · Machine Intelligences · -10% Empire Size from Pops-10% - 5
PacifistEthic · 1 pt · -10% Empire Size from Pops-10% - 5
Subsumed WillCivic · Hive Minds · -10% Empire Size from Pops-10% - 9
Domination: finisherTradition · Domination · -5% Empire Size from Pops-5% - 9
KinshipTradition · Harmony · -5% Empire Size from Pops-5% - 9
Psionic TheoryTier 3 society tech · -5% Empire Size from Pops-5% - 9
Statecraft: finisherTradition · Statecraft · -5% Empire Size-5% - 9Synchronized AgentsTradition · Synchronicity · -5% Empire Size from Pops-5%
How it's counted: Empire size % from every source, added — lower is better (less sprawl penalty).
By kind
Empire size: questions
What gives the most empire size in Stellaris 4.5.2?
By the game's own numbers: Nanotech: finisher (tradition, -50%); Private Prospectors (civic, -40%); Lost Building Methods (tier 2 engineering tech, -30%). Empire size % from every source, added — lower is better (less sprawl penalty).
Are these tier lists?
No. They add up the game's own modifier values for the goal — what each thing gives, not how good it feels to play. Conditional effects and one-off events are not counted.